How to boot board from EPCS with NIOSII code running from SDRAM?

Hi, I found a demo DE0_NANO_SDRAM_Nios_Test from this topic: https://community.intel.com/t5/FPGA-SoC-And-CPLD-Boards-And/Can-t-get-DE0-nano-board-to-boot-from-EPCS-with-NIOSII-code/td-p/698479 , wh...